romney did his debate prep in denver. when you go to 5,000 feet and you only have a few hours to adjust -- >> that's interesting. >> -- i don't know maybe this is it. >> all right. maybe the altitude. >> what's that? >> i was saying maybe the altitude. al gore was being lighthearted when he was saying maybe that was the challenge, the altitude. >> maybe the altitude is what affected mitt romney's memory. maybe that was the impact on the debate. >> you win the gold. >> it is lighthearted. >> you win the gold. >> it is light hearted. >> stephanie, always great to see you. i appreciate your time. >>> "out front" next we break down mitt romney's key line of the night. it came when he talked about his tax plan. does it add up or not? u.s. special forces are on the ground, collecting intelligence in libya. we have a report from benghazi, coming up. >>> and live report from facebook revealed by mark zuckerberg. ♪ [ male announcer ] how do you turn an entrepreneur's dream... ♪ into a scooter that talks to the cloud? ♪ or ma